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Volume 41 Issue 8
Aug.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(8): 1513-1519.
HUANG Xia, HUANG Yong. Experimental analysis of wall quenching distance of a premixed Bunsen flame[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1513-1519. doi: 10.13700/j.bh.1001-5965.2014.0821(in Chinese)
Citation: HUANG Xia, HUANG Yong. Experimental analysis of wall quenching distance of a premixed Bunsen flame[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1513-1519. doi: 10.13700/j.bh.1001-5965.2014.0821(in Chinese)
shu

Experimental analysis of wall quenching distance of a premixed Bunsen flame

doi: 10.13700/j.bh.1001-5965.2014.0821
  • 1.

    AVIC Academy of Aeronautic Propulsion Technology, Beijing 101304, China

  • 2. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 26 Dec 2014
  • Publish Date: 20 Aug 2015
    Abstract
  • Quenching distance is a major parameter to characterize the flame wall quenching effect. The quenching distance of a methane-air premixed Bunsen flame was measured using direct photography of the flame position. The result indicates that the quenching distance changes differently with the incoming flow velocity under different equivalence ratio ranges. While the velocity is fixed, the quenching distance decreases with the increasing equivalence ratio for the lean flame. For the rich flame the quenching distance first increases and then decreases, and keeps a constant after a certain equivalence ratio. This correlation is induced by the competition between the cooling of the wall by incoming flow and the heating of the wall by flame. The double-flame structure of a premixed rich flame especially influences the wall quenching effect very remarkably.

     

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